#!/bin/bash
mv /etc/apt/sources.list  /etc/apt/sources.list.bak
echo "开始处理更换数据源"
echo "# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释" > /etc/apt/sources.list
echo "deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse" >> /etc/apt/sources.list
echo "deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse" >> /etc/apt/sources.list
echo "deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse" >> /etc/apt/sources.list
echo "deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse" >> /etc/apt/sources.list

echo "# 预发布软件源，不建议启用" >> /etc/apt/sources.list
echo "# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse" >> /etc/apt/sources.list

apt update